Decades after World War III, nuclear war is decimating the planet. Amidst the turmoil and destruction lies one last drop of hope: the most ambitious space mission ever planned, to be executed by the largest earthly spacecraft. The goal? For the crew aboard IWSA-24 to be the first to colonize Alpha-64, located 100 Earth years away. The clock is ticking, with the launch only a few weeks out. But when the war takes a calamitous turn only minutes before the shuttle's first flight simulation, suddenly the crew on board realize they are the planet's only survivors. With minimal provisions, equipment, and astronauts, a new set of questions arise for Captain Kriss and her all-female crew: will IWSA-24 have enough fuel to make it to Alpha-64? Will they devise a plan to secure male DNA in time to save humanity? What mysteries and unknowns lurk on this faraway planet? What starts as an unlikely community of lovers, enemies, scientists, and spies evolves rapidly as the crew approaches Alpha-64.